Anti-shake finger knob handle

Abstract

This utility model belongs to the field of electric bicycle technology, specifically relating to an anti-wobbling shifter. Addressing the shortcomings of existing shifters that are prone to wobbling, this utility model adopts the following technical solution: The anti-wobbling shifter includes: a bracket with a receiving groove and an opening connecting part, the opening connecting part forming a tight-fitting rib; a fixing ring including through holes and screw holes at both ends; a fastening screw; a shell, fitted over the bracket and swinging relative to the bracket; the fastening screw passes through the bracket and the through holes of the fixing ring and is screwed into the screw hole, the nut of the fastening screw tightly fitting the opening connecting part; a limiting groove is also formed on the bracket, and a limiting protrusion extends radially outward from the outer side of the fixing ring, the limiting protrusion being located in the limiting groove, the limiting protrusion and the limiting groove cooperating to limit the displacement of the bracket along the pressure direction of the shell. The beneficial effects of this utility model's anti-wobbling shifter are: avoiding or reducing shifter wobbling; and lower requirements for the processing and assembly of the limiting protrusion and limiting groove.

Description

Technical Field

[0001] This utility model belongs to the field of electric bicycle technology, specifically relating to a sway-resistant throttle. Background Technology

[0002] Electric bicycles use either a throttle or a grip lever to adjust the speed. The throttle has advantages over the grip lever, such as being less prone to accidental operation.

[0003] An existing type of shifter has a bracket that is fixed to a fastening screw via a rib in a mounting hole. After a period of use, this type of shifter may develop a wobbling motion. The applicant's analysis revealed that this is because each time the shifter is pressed (especially when the shifter is at maximum speed), the bracket may be subjected to force and rotate or have a tendency to rotate. After repeated pressing, the rib in the mounting hole of the bracket may wear down, causing the bracket and fastening screw to loosen. This allows the bracket and shifter to rotate relative to the fixed ring, resulting in the shifter's wobbling motion.

[0004] Chinese utility model patent CN 211844766 U discloses a throttle assembly that uses a protrusion formed in the receiving cavity of a bracket to hold a retaining ring between the bracket and the protrusion, thus preventing wobbling. However, due to manufacturing and assembly issues, the protrusion may not fully engage with the retaining ring after the screws are tightened, leaving a possibility of some wobbling. Summary of the Invention

[0005] This invention addresses the shortcomings of existing shift knobs that are prone to wobbling by providing an anti-wobbling shift knob that avoids or reduces wobbling. Its structure differs from existing ones, and it is easy to manufacture and assemble.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an anti-wobbling throttle, the anti-wobbling throttle comprising:

[0007] The bracket has a receiving groove and an opening connecting part communicating with the receiving groove, and a tight-fitting rib is formed in the opening connecting part;

[0008] A retaining ring, located in a receiving groove, includes through holes and threaded holes at both ends;

[0009] Fastening screws;

[0010] The outer casing is fitted over the support and swings relative to the support.

[0011] The return spring generates a restoring force on the outer casing;

[0012] The fastening screw passes through the through-hole of the bracket and the fixing ring and is then screwed into the screw hole.

[0013] In this case, the nut part of the fastening screw is tightly fitted to the opening connection part;

[0014] The bracket also has a limiting groove, and the outer side of the fixing ring extends radially outward to form a limiting protrusion. The limiting protrusion is located in the limiting groove, and the limiting protrusion and the limiting groove cooperate to limit the displacement of the bracket along the pressure direction of the outer shell.

[0015] This utility model's anti-shake throttle lever features a screw nut that is tightly fitted to the opening connection of the bracket (with deformation of the fitting rib), ensuring the bracket is fixed even when no force is applied. A limiting protrusion on the fixing ring engages with a limiting groove on the bracket, restricting the bracket's displacement along the pressure direction of the outer shell. When the outer shell is pressed, causing the bracket to rotate or tend to rotate, the limiting protrusion restricts or prevents the bracket from moving along the pressing direction, thereby avoiding or reducing the wobbling of the throttle lever. The machining and assembly requirements for the limiting protrusion and limiting groove are relatively low.

[0016] As an improvement, the limiting protrusion abuts against the limiting groove to prevent the bracket from displacing along the direction of pressure on the outer shell.

[0017] As an improvement, there are multiple convex ribs that are evenly distributed circumferentially.

[0018] As an improvement, the inner side of the fixing ring extends radially to form an anti-rotation protrusion that mates with the C-shaped handle horizontal tube.

[0019] As an improvement, the anti-shake throttle also includes a Hall switch and a switch cover housed in the bracket. The switch cover is fixed to the bracket by a switch screw, which passes through the bracket and is screwed into the switch cover. The switch screw is axially positioned.

[0020] As an improvement, the anti-wobbling throttle also includes a lead wire that passes through the switch cover and exits.

[0021] As an improvement, the limiting protrusion is located between the switch cover and the through hole.

[0022] As an improvement, the anti-wobbling throttle also includes a magnetic element housed in the housing.

[0023] As an improvement, the anti-shake throttle also includes an anti-slip press member on the housing, the housing having a circular base and a press mounting portion extending from the outside of the circular base, the press mounting portion having a mounting groove, and the anti-slip press member being located in the mounting groove.

[0024] As an improvement, the anti-wobbling shifter also includes a side cover in the housing, which snaps into the bracket, and the inner side of the housing extends to form a limiting ring, with the side cover and bracket located on opposite sides of the limiting ring; and / or,

[0025] The anti-shake throttle also includes a return spring, with its two ends inserted into the housing and bracket, respectively.

[0026] The beneficial effects of this anti-shake throttle are: the nut of the fastening screw is tightly fitted with the opening connection of the bracket (the tight fitting rib deforms), and the bracket is fixed even when no force is applied; the limiting protrusion on the fixing ring cooperates with the limiting groove on the bracket to limit the displacement of the bracket along the pressure direction of the outer shell; when the outer shell is pressed, causing the bracket to rotate or have a tendency to rotate, the limiting protrusion restricts or prevents the bracket from moving along the pressing direction, thereby avoiding or reducing the shaking of the throttle; the processing and assembly requirements for the limiting protrusion and the limiting groove are relatively low. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the anti-shake throttle lever of Embodiment 1 of this utility model.

[0028] Figure 2 This is an exploded view of the anti-shake throttle lever of Embodiment 1 of this utility model.

[0029] Figure 3 This is a schematic diagram of the anti-shake throttle bracket of Embodiment 1 of this utility model.

[0030] Figure 4 This is a schematic diagram of the fixing ring of the anti-shake throttle bracket of the first embodiment of this utility model.

[0031] In the diagram, 1 is the bracket; 11 is the receiving groove; 12 is the opening connection part; 13 is the tight-fitting rib; 14 is the limiting groove; and 15 is the switch groove.

[0032] 2. Retaining ring; 21. Through hole; 22. Screw hole; 23. Limiting protrusion; 231. Limiting surface; 24. Anti-rotation protrusion;

[0033] 3. Tighten the screws;

[0034] 4. Outer shell;

[0035] 5. Magnetic induction component; 51. Hall effect switch; 52. Switch cover; 53. Switch screw; 54. Lead wire; 55. Magnetic component;

[0036] 6. Anti-slip pressing parts;

[0037] 7. Side cover;

[0038] 8. Return spring. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be explained and described below. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0040] See Figures 1 to 4 The anti-wobbling throttle of this utility model embodiment includes:

[0041] The bracket has a receiving groove and an opening connecting part communicating with the receiving groove, and a tight-fitting rib is formed in the opening connecting part;

[0042] A retaining ring, located in a receiving groove, includes through holes and threaded holes at both ends;

[0043] Fastening screws;

[0044] The outer casing is fitted over the support and swings relative to the support.

[0045] The return spring generates a restoring force on the outer casing;

[0046] The fastening screw passes through the through-hole of the bracket and the fixing ring and is then screwed into the screw hole.

[0047] In this case, the nut part of the fastening screw is tightly fitted to the opening connection part;

[0048] The bracket also has a limiting groove, and the outer side of the fixing ring extends radially outward to form a limiting protrusion. The limiting protrusion is located in the limiting groove, and the limiting protrusion and the limiting groove cooperate to limit the displacement of the bracket along the pressure direction of the outer shell.

[0049] The anti-shake throttle of this utility model embodiment features a screw nut that is tightly fitted to the opening connection of the bracket (with deformation of the fitting rib), so the bracket is fixed even when no force is applied. The limiting protrusion on the fixing ring cooperates with the limiting groove on the bracket to limit the displacement of the bracket along the pressure direction of the outer shell. When the outer shell is pressed, causing the bracket to rotate or have a tendency to rotate, the limiting protrusion restricts or prevents the bracket from moving along the pressing direction, thereby avoiding or reducing the shaking of the throttle. The machining and assembly requirements for the limiting protrusion and the limiting groove are relatively low.

[0050] Example 1

[0051] See Figures 1 to 4 The anti-wobbling throttle of Embodiment 1 of this utility model includes:

[0052] The bracket 1 has a receiving groove 11 and an opening connecting part 12 communicating with the receiving groove 11. A tight-fitting rib 13 is formed in the opening connecting part 12, and the hole of the opening connecting part 12 is arranged along the tangential direction.

[0053] The fixing ring 2 is located in the receiving groove 11 and includes through holes 21 and screw holes 22 at both ends, with a distance between the through holes 21 and the screw holes 22;

[0054] Fastening screw 3;

[0055] The outer shell 4 is fitted over the bracket 1 and swings relative to the bracket 1;

[0056] The return spring 8 generates a return force on the outer casing 4;

[0057] In this case, the fastening screw 3 passes through the through hole 21 of the bracket 1 and the fixing ring 2 and is screwed into the screw hole 22. In this case, the nut of the fastening screw 3 is tightly fitted with the opening connection part 12.

[0058] The bracket 1 also has a limiting groove 14, and the outer side of the fixing ring 2 extends radially outward to form a limiting protrusion 23. The limiting protrusion 23 is located in the limiting groove 14. The limiting protrusion 23 and the limiting groove 14 cooperate to limit the displacement of the bracket 1 along the pressure direction of the outer shell 4.

[0059] In this embodiment, the limiting protrusion 23 abuts against the limiting groove 14 to prevent the bracket 1 from displacing along the pressure direction of the outer shell 4.

[0060] In this embodiment, there are multiple tight-fitting ribs 13, which are evenly distributed circumferentially.

[0061] In this embodiment, the inner side of the retaining ring 2 extends radially to form an anti-rotation protrusion 24 that mates with the C-shaped handlebar. In other embodiments, when mounted on a circular handlebar, this anti-rotation protrusion 24 is not required.

[0062] In this embodiment, the anti-shake throttle also includes a magnetic induction component 5. The magnetic induction component 5 includes a Hall switch 51 and a switch cover 52 disposed in the bracket 1. The switch cover 52 is fixed to the bracket 1 by a switch screw 53. The switch screw 53 passes through the bracket 1 and is screwed into the switch cover 52. The switch screw 53 is axially arranged. A switch groove 15 is formed on the bracket 1. After the Hall switch 51 is installed in the switch groove 15, glue is applied to seal the Hall switch 51 and the connection between the lead wire 54 and the Hall switch 51.

[0063] In this embodiment, the magnetic induction component 5 further includes a lead wire 54, which passes through the switch cover 52 and extends outwards. The switch cover 52 is located on the side of the bracket 1 on one axial side.

[0064] In this embodiment, the limiting protrusion 23 is located between the switch cover 52 and the through hole portion 21. The surface of the limiting protrusion 23 facing the through hole portion 21 is the limiting surface 231.

[0065] In this embodiment, the magnetic induction component 5 further includes a magnetic element 55 disposed in the housing 4. The magnetic element 55 is a magnet or a magnetic steel.

[0066] In this embodiment, the anti-wobbling throttle also includes an anti-slip pressing member 6 disposed on the housing 4. The housing 4 has a circular base and a pressing mounting portion extending from the outer side of the circular base. The pressing mounting portion has a mounting groove, and the anti-slip pressing member 6 is located in the mounting groove. The anti-slip mounting member is tightly fitted and / or bonded to the mounting groove. The hardness of the anti-slip pressing member 6 is less than that of the housing 4, so as to provide a better operating feel.

[0067] In this embodiment, the anti-wobbling throttle also includes a side cover 7 in the housing 4. The side cover 7 is snapped into the bracket 1, and the side cover 7 and the switch cover 52 are located on opposite sides of the bracket 1 along the axial direction. The inner side of the housing 4 extends to form a limiting ring, and the bracket 1 and the side cover 7 are located on opposite sides of the limiting ring. The projection of the limiting ring, the bracket 1, and the side cover 7 on the radial plane at least partially coincides. The side cover 7 is snapped into the bracket 1, connecting the side cover 7 and the bracket 1, while preventing the housing 4 from moving axially relative to the bracket 1 or the side cover 7. The housing 4 can only swing relative to the bracket 1 and the side cover 7 (an angle limiting structure is also formed between the housing 4 and the bracket 1).

[0068] In this embodiment, the return spring 8 is a torsion spring, with one end inserted into the outer casing 4 and the other end inserted into the bracket 1. The return spring 8 generates an upward force on the outer casing 4, with the downward force being the pressing direction.

[0069] In this embodiment, during assembly, firstly, the anti-slip pressing part 6 is installed into the outer shell 4, and the other parts of the magnetic induction component 5, except for the magnetic force part 55, are fixed to the bracket 1. The magnetic force part 55 is installed into the outer shell 4. Then, the bracket 1 (and the parts of the magnetic induction component 5 on it, except for the magnetic force part 55) is placed into the outer shell 4. The side cover 7 is placed into the outer shell 4 and snapped into the bracket 1. Next, the fixing ring 2 is placed into the receiving groove 11 of the bracket 1. Finally, the fastening screw 3 is tightened (when installing it onto the C-shaped handle tube, first align the anti-rotation protrusion 24 of the fixing ring 2 with the opening position of the C-shaped handle tube, move it to the desired position, and then tighten the fastening screw 3).

[0070] In this embodiment, the anti-shake principle of the shifter is as follows: When the shifter is fixed to the C-shaped handlebar, when the fastening screw 3 is tightened, the through hole 21 and screw hole 22 of the fixing ring 2 will approach each other. At the same time, the limiting surface 231 of the limiting protrusion of the fixing ring 2 will abut against the side wall of the limiting groove 14 of the bracket 1. After installation, during use, when the anti-slip pressing part 6 is pressed, the force of the return spring 8 is overcome, causing the anti-slip pressing part 6, the outer shell 4, and the magnetic part 55 in the outer shell 4 to rotate downward. Since the fixing ring 2 is fixed to the C-shaped handlebar and the limiting protrusion 23 of the fixing ring 2 abuts against the side wall of the limiting groove 14 of the bracket 1, the anti-slip pressing part 6, the outer shell 4, and the magnetic part 55 in the outer shell 4 rotate downward. When the bracket 1 is connected, the bracket 1 cannot rotate downwards, thus avoiding stress on the fastening rib 13 of the bracket 1. The fastening rib 13 of the bracket 1 will not wear. During the downward rotation of the magnetic component 55, the Hall switch 51 senses different magnetic forces and generates corresponding signals. During the reset process of the outer shell 4 and the anti-slip pressing component 6, since the force of the reset spring 8 is small and its direction is almost circumferential, unlike the anti-slip pressing component 6 which may have a large radial component when pressed, the reset spring 8 will hardly transmit the force to make the bracket 1 rotate upwards. The fastening rib 13 of the bracket 1 is almost unstressed and therefore will not wear.

[0071] The beneficial effects of the anti-shaking throttle lever of Embodiment 1 of this utility model are as follows: the nut part of the fastening screw 3 is tightly fitted with the opening connection part 12 of the bracket 1 (the tight fitting rib 13 deforms), and the bracket 1 is also fixed when no force is applied; the limiting protrusion 23 on the fixing ring 2 cooperates with the limiting groove 14 on the bracket 1 to limit the displacement of the bracket 1 along the pressure direction of the outer shell 4. When the outer shell 4 is pressed, causing the bracket 1 to rotate or have a tendency to rotate, the limiting protrusion 23 restricts or prevents the bracket 1 from moving along the pressing direction, thereby avoiding or reducing the shaking of the throttle lever; the processing and assembly requirements of the limiting protrusion 23 and the limiting groove 14 are low; the switch screw 53 connecting the switch cover 52 and the bracket 1 is screwed into the switch cover 52, and the switch screw 53 is hidden and not exposed, which is more aesthetically pleasing; the switch cover 52 is located on the side of the bracket 1, and the lead wire 54 passes through the switch cover 52 and is led out to realize external wiring; the inner side of the fixing ring 2 extends to form an anti-rotation protrusion 24, which can be adapted to the C-shaped tube.

[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the content described in the above specific embodiments. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A wobbly-resistant throttle lever, characterized in that: Anti-wobbling shifters include: The bracket (1) has a receiving groove (11) and an opening connection part (12) communicating with the receiving groove (11), and a tight-fitting rib (13) is formed in the opening connection part (12); The fixing ring (2) is located in the receiving groove (11) and includes through holes (21) and screw holes (22) at both ends; Fastening screw (3); The outer shell (4) is fitted over the bracket (1) and swings relative to the bracket (1); The return spring (8) generates a return force on the outer casing (4); The fastening screw (3) passes through the through hole (21) of the bracket (1) and the fixing ring (2) and is then screwed into the screw hole (22). Among them, the nut part of the fastening screw (3) is tightly fitted with the opening connection part (12); Among them, a limiting groove (14) is formed on the bracket (1), and a limiting protrusion (23) is formed on the outer side of the fixing ring (2) extending radially outward. The limiting protrusion (23) is located in the limiting groove (14). The limiting protrusion (23) and the limiting groove (14) cooperate to limit the displacement of the bracket (1) along the pressure direction of the outer shell (4).

2. The anti-wobbling throttle lever according to claim 1, characterized in that: The limiting protrusion (23) abuts against the limiting groove (14) to prevent the bracket (1) from displacing along the pressure direction of the outer shell (4).

3. The anti-wobbling throttle lever according to claim 2, characterized in that: There are multiple ribs (13) that are evenly distributed circumferentially.

4. The anti-wobbling throttle lever according to claim 2, characterized in that: The inner side of the fixing ring (2) extends radially to form an anti-rotation protrusion (24) that cooperates with the C-shaped horizontal tube.

5. The anti-wobbling throttle lever according to claim 2, characterized in that: The anti-shake throttle also includes a Hall switch (51) and a switch cover (52) located in the bracket (1). The switch cover (52) is fixed to the bracket (1) by a switch screw (53). The switch screw (53) passes through the bracket (1) and is screwed into the switch cover (52). The switch screw (53) is axially positioned.

6. The anti-wobbling throttle lever according to claim 5, characterized in that: The anti-shake throttle also includes a lead wire (54) that passes through the switch cover (52) and then exits.

7. The anti-wobbling throttle lever according to claim 6, characterized in that: The limiting protrusion (23) is located between the switch cover (52) and the through hole (21).

8. The anti-wobbling throttle lever according to claim 2, characterized in that: The anti-shake throttle also includes a magnetic element (55) located in the housing (4).

9. The anti-wobbling throttle lever according to claim 2, characterized in that: The anti-shake throttle also includes an anti-slip press member (6) provided on the housing (4). The housing (4) has a circular base and a press mounting portion extending from the outer side of the circular base. The press mounting portion has a mounting groove, and the anti-slip press member (6) is located in the mounting groove.

10. The anti-wobbling throttle lever according to claim 2, characterized in that: The anti-shake throttle also includes a side cover (7) in the housing (4), the side cover (7) being snapped into the bracket (1), the inner side of the housing (4) extending to form a limiting ring, the side cover (7) and the bracket (1) being located on both sides of the limiting ring; and / or, The return spring (8) is a torsion spring, with its two ends inserted into the outer shell (4) and the bracket (1) respectively.

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